[U-Boot] how to get u-boot code with arm64: core support

[TigerLiu at viatech.com.cn]

Hi,Sharma:
>Can you try this command:
>./Foundation_v8 --image ./u-boot --cores=4 --no-secure-memory

Error:
terminal_1: Listening for serial connection on port 5000
terminal_2: Listening for serial connection on port 5001
terminal_0: Listening for serial connection on port 5002
terminal_3: Listening for serial connection on port 5003
ERROR: an unexpected exception error has occurred inside the model
terminate called after throwing an instance of 'ObjectLoaderError'
  what():  ./u-boot.bin: error while loading 'AXYS 'in'-file' file:
fgets: Success
./run.sh: line 3: 25702 Aborted                 ./Foundation_v8 --image
./u-boot.bin --cores=4 --no-secure-memory

So, maybe current FVP's version is newer!